Display screen or portion thereof with graphical user interface



The sole FIGURE is a front view of a display screen or a portion thereof with a graphical user interface.

The outermost broken-line rectangle illustrates the perimeter of a display screen or portion thereof, and forms no part of the claimed design. The remaining broken lines illustrate portions of a graphical user interface and form no part of the claimed design. 

CLAIM An ornamental design for a display screen or a portion thereof with a graphical user interface, as shown and described. 